Income Taxes (Summary Of Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions |
12 Months Ended | |||
---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Income Tax Disclosure [Abstract] | ||||
Gross unrecognized tax benefits | $ 252.1 | $ 206.9 | $ 187.6 | $ 231.6 |
Unrecognized tax benefits, net of tax impacts in other jurisdictions | 216.1 | 179.6 | 160.8 | |
Interest and penalties related to uncertain tax positions | 32.7 | 19.5 | 11.0 | |
Interest and penalties recognized in the consolidated statements of income | $ 13.2 | $ 8.6 | $ (12.5) |